02_classes/07_outro `test_seasonal_discount_validation_expired` is not test correctly

[xavierforge]

The test case test_seasonal_discount_validation_expired in 02_classes/07_outro should be intended to test SeasonalDiscount to raise an ExpiredDiscount exception if apply is called, but the current date is outside the discount period.

But apply is not called in the test case, so it will always have Failed: DID NOT RAISE <class 'outro2.ExpiredDiscount'>

[Alexandre-aksenov]

In my version of the exercise, apply is called. The test looks like this:

def test_seasonal_discount_validation_expired():
    discount = SeasonalDiscount(0.5, datetime.now(UTC) - timedelta(days=2), datetime.now(UTC) - timedelta(days=1))
    with pytest.raises(ExpiredDiscount) as exc_info:
        discount.apply(100)
    assert str(exc_info.value) == "The discount is no longer active"